[jbanta]

Space for a mounting and a shaft can become a problem in a small boat. Have you concidered going to a saildrive unit? In my Lancer 29 I have the same problem not enough space for a standard aux. I will include two types both would work well in a boat the size of yours..

http://www.saildrive280.com/

http://www.yanmar.com.au/marine/Saildrive/saildetails.htm